How Much Should a Contractor Spend on Google Ads? A Data-Driven Answer.

The Budget Question Every Contractor Asks

"How much should I spend on Google Ads?" It is the number one question we hear from contractors. And the honest answer is: it depends on your trade, your city, and your competition.

We can replace a single guess with a range built from available market evidence, client inputs, and clearly labeled planning benchmarks. The result is a starting hypothesis to validate in-market, not a promise of campaign performance.

Average Cost Per Lead by Trade

These illustrative planning ranges show why one universal cost-per-lead assumption is unsafe:

• Roofing: $45-85 per lead
• HVAC: $35-70 per lead
• Plumbing: $25-55 per lead
• Electrical: $30-60 per lead
• Water Damage Restoration: $55-120 per lead

The wide ranges reflect differences in city size, competition level, and seasonality.

The Minimum Viable Budget

There is no universal minimum that guarantees consistent leads. The table below is an illustration of how a budget and an assumed cost per lead translate into a planning range:

Why Most Contractors Waste Their Ad Budget

The problem is not how much you spend — it is how your campaigns are set up. The most common mistakes we see:

1. Targeting too broad — Running ads statewide instead of a 15-mile radius
2. Wrong keywords — Bidding on informational terms instead of high-intent commercial terms
3. No landing page — Sending ad traffic to a generic homepage
4. Slow follow-up — Paying $60 for a lead and then calling back 4 hours later
5. No tracking — Having no idea which keywords generate actual jobs

More budget cannot repair poor targeting, weak conversion, or slow handling. Better execution can improve efficiency, but the result must be measured rather than assumed.

The ROI Math

If you spend $1,500, capture 20 qualified leads, close 30%, and collect an average $4,200 ticket, the arithmetic produces $25,200 in gross revenue. That is not a 16.8x business return: contribution margin, platform and management costs, capacity, cancellations, and collection timing still have to be deducted.